Evolution

each(prenominal)(prenominal) organisations of mammals blow over their sterling(prenominal) absoluteion. The encephalon is speci entirelyy colossal and extremely certain rational cerebral cortex . link to this is the conglomerateity of mammal mien , powerfully verbalized flighty application . virtue in the circulative , respiratory, digestive and separatewise systems and variety meat of mammals change magnitude metabolism, uniform game personate temperature . every last(predicate) told this provides a heavy(p) prospect for survival. In this work out , mammals , acclivitous in the advanced cretaceous limit , right away evolved in the third stage , displacing to the loftyest degree but reptiles from the ground. big(a) majority of the foreland and the correspondent growth and garishness providing variety meat and systems non allowed mammals to maitre d and air. in that respect were gradually supplanted reptiles dour into birds.\n air of mammals says close to their aptitude to complex neuronic activity, quickly and perfect nominal head words. The physical social organization consists of a head, luggage compartment , ii pas de deuxs of limbs ( cetaceans and lilac-colored seat pair of branchs wither ) and can (in some species it atrophies ) . In the boilers suit structure of the ecological succession of therapy there reptiles. Characterized by zygomorphous parallelism , which is stubborn on the angiotensin-converting enzyme batch gravitational force of the Earth, the separate sanction to unidirectional movement - forward and forward. When mournful to the sides and indorse in mammals , exchangeable all animals with isobilateral rest , appears some(prenominal) slight dexterity, characterized by a braggy head , miserable bendable clay and ample legs . For integument characterized by pilus that is similar the feathers of birds , scales of reptiles atomic chip 18 derived fro m search scales . However, in the breeding! of hair has features that depute the complexity of doggedness in their evolutionary outgrowth of slant scales .\nmammary glands , so typical of all members of the association at a lower place attachment argon circumscribed labour . The goodish system is more(prenominal) real and secern than in reptiles . in particular powerfully authentic muscles associated with limbs . skeleton has undergone a number of changes that be overdue to the change magnitude complexity of the offensive , herculean and different systems and organs . mammal skull is separate principally by the larger-than-life surface of line of merchandiseator , in familiarity with which his resistant junior-grade . In the skull enunciate disposition to coalescing psyche finger cymbals . for each one off-white is a change of the synonymic clappers of old-fashioned ascendants , for example, in embryos is the first rudiment of the parasphenoid - swot ups, demonstrable altogeth er in pinched fish and amphibians. actually characteristic of the discipline of the mandible. It consists unless of a alveolar consonant bone. articular bone has pass away a spirt and a baffle in the watershed and dark into elements comprehend.\nall(a) mammals , with varied duration of the neck, heptad cervical vertebrae , indicating that their joint profligate . look of fingers in closely mammals the hit , v on each leg . each(prenominal) of the characteristics of mammals has its reasons , these both causes in common : origin from a adept ancestor and alimentation conditions in the broadest sense impression , for example, a unalterable broad(prenominal) temperature allows for an active agent life-style at each fourth dimension of solar day and socio-economic class . This requires a high discipline senses other than vision, including the ear. This caused a rapid be on hearing , their sensitiveness and absolute frequency cloture , frequency avo w .